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ISN to UTH: distance & flight time
Williston (Sloulin Field International Airport) → Udon Thani (Udon Thani Airport)
7,622 mi
12,266 km · 6,623 nm
15h 25m
estimated nonstop flight time
+12h
time difference · heading northwest
See live ISN→UTH fares Phone-only fares on this route — call free
Flight time details
7,622 miles nonstop takes roughly 15h 25m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 12-hour time gain when reading arrival times on your ticket.
The two airports
- ISN — Sloulin Field International Airport · Williston, United States
- UTH — Udon Thani Airport · Udon Thani, Thailand
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near ISN
- SDY · Sidney - Richland Regional Airport41 mi away
- YEN · Estevan Airport78 mi away
- OLF · L M Clayton Airport89 mi away
- GDV · Dawson Community Airport90 mi away
Near UTH
- VTE · Wattay International Airport44 mi away
- KKC · Khon Kaen Airport64 mi away
- LOE · Loei Airport70 mi away
- SNO · Sakon Nakhon Airport89 mi away
Frequently asked questions
How far is ISN from UTH?
The flight distance from Williston (ISN) to Udon Thani (UTH) is 7,622 miles (12,266 km, 6,623 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ISN to UTH?
A nonstop flight takes about 15h 25m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Williston and Udon Thani?
Udon Thani is 12 hours ahead of Williston.
What is the cheapest way to fly from ISN to UTH?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ISN–UTH that never appear on search engines, with no booking fees.